著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Pete Riley,On the probability of occurrence of extreme space weather events,Space Weather,1542-7390,American Geophysical Union (AGU),2012-02,10,2,02012,https://cir.nii.ac.jp/crid/1363388844919911680,https://doi.org/10.1029/2011sw000734